//module.js
let name = "tom";
let age = 20;
let phone = '13813661234';
let introduce = function(){
     return `My name is ${name}!I'm ${age} years old!`;
};
export {name,age,phone,introduce};

//module.js文件
function foo(){
    console.log('foo');
}
function bar(){
    console.log('bar');
}
export {foo,bar};
